From: NeilBrown <neilb@suse.de>
To: Adam Kwolek <adam.kwolek@intel.com>
Cc: linux-raid@vger.kernel.org, ed.ciechanowski@intel.com,
marcin.labun@intel.com
Subject: Re: [PATCH 12/14] Early reshape backup verification
Date: Wed, 21 Sep 2011 12:31:20 +1000 [thread overview]
Message-ID: <20110921123120.5021dd84@notabene.brown> (raw)
In-Reply-To: <20110916115518.5201.5649.stgit@gklab-128-013.igk.intel.com>
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On Fri, 16 Sep 2011 13:55:18 +0200 Adam Kwolek <adam.kwolek@intel.com> wrote:
> Ever reshape needs to backup its critical section. For this purposes
> backup file or external metadata mechanisms can be used.
This is not correct.
For internal metadata the critical section can be stored on a spare device,
and this is preferred where possible.
So it is not the case that you must have a backup_file for non-external
data.
NeilBrown
>
> Add verification if backup file or metadata mechanisms can have chance
> to restore data form backup.
> For native metadata existence of passed (from command line) backup file
> is checked. For external metadta manage_reshape() and recover_backup()
> are tested for this purposes.
>
> Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
> ---
>
> Grow.c | 12 ++++++++++++
> 1 files changed, 12 insertions(+), 0 deletions(-)
>
> diff --git a/Grow.c b/Grow.c
> index fa22382..d54b8a8 100644
> --- a/Grow.c
> +++ b/Grow.c
> @@ -3667,6 +3667,18 @@ int Grow_continue_command(char *devname, int fd,
> devname);
> return 1;
> }
> +
> + /* request backup file
> + * when no metadta specific backup action is defined
> + */
> + if ((backup_file == NULL) &&
> + ((st->ss->manage_reshape == NULL) ||
> + (st->ss->recover_backup == NULL))) {
> + fprintf(stderr, Name ": Please provide backup file "
> + "for reshape continuation.\n");
> + return 1;
> + }
> +
> dprintf("Grow continue is run for ");
> if (st->ss->external == 0) {
> dprintf("native array (%s)\n", devname);
>
> --
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> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
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next prev parent reply other threads:[~2011-09-21 2:31 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-16 11:53 [PATCH 00/14] Series short description Adam Kwolek
2011-09-16 11:53 ` [PATCH 01/14] Stop array reshape when mounted initramfs is detected Adam Kwolek
2011-09-19 10:42 ` NeilBrown
2011-09-19 11:14 ` Kwolek, Adam
2011-09-16 11:54 ` [PATCH 02/14] Stop container reshape while using initramfs Adam Kwolek
2011-09-16 11:54 ` [PATCH 03/14] FIX: Do not unblock array accidentally Adam Kwolek
2011-09-21 2:19 ` NeilBrown
2011-09-16 11:54 ` [PATCH 04/14] Add continue option to grow command Adam Kwolek
2011-09-21 2:22 ` NeilBrown
2011-09-21 7:47 ` Kwolek, Adam
2011-09-16 11:54 ` [PATCH 05/14] Add Grow_continue_command Adam Kwolek
2011-09-16 11:54 ` [PATCH 06/14] Check and run mdmon Adam Kwolek
2011-09-16 11:54 ` [PATCH 07/14] FIX: Memory leak during Assembly Adam Kwolek
2011-09-21 2:23 ` NeilBrown
2011-09-16 11:54 ` [PATCH 08/14] Check if reshape can be restarted Adam Kwolek
2011-09-21 2:27 ` NeilBrown
2011-09-21 7:45 ` Kwolek, Adam
2011-09-16 11:54 ` [PATCH 09/14] Move restore backup code to function Adam Kwolek
2011-09-21 2:28 ` NeilBrown
2011-09-16 11:55 ` [PATCH 10/14] Perform restore backup for reshape continuation Adam Kwolek
2011-09-21 2:29 ` NeilBrown
2011-09-21 7:35 ` Kwolek, Adam
2011-09-16 11:55 ` [PATCH 11/14] Add possibility to restart reshape for native metadata Adam Kwolek
2011-09-16 11:55 ` [PATCH 12/14] Early reshape backup verification Adam Kwolek
2011-09-21 2:31 ` NeilBrown [this message]
2011-09-21 7:33 ` Kwolek, Adam
2011-09-16 11:55 ` [PATCH 13/14] Check if md allows to control reshape Adam Kwolek
2011-09-21 2:33 ` NeilBrown
2011-09-21 7:31 ` Kwolek, Adam
2011-09-21 7:51 ` NeilBrown
2011-09-16 11:55 ` [PATCH 14/14] Manual update for --continue option Adam Kwolek
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